Connectance in stream food webs
- J. M. Schmid-Araya, P. Schmid, A. Robertson, J. Winterbottom, C. Gjerløv, A. Hildrew
- Environmental Science
- 1 November 2002
The link scaling law and the constant connectance hypothesis must be rejected for food webs in stream systems because of the high physical heterogeneity and complexity of the sedimentary habitat.
THE IMPORTANCE OF MEIOFAUNA IN FOOD WEBS: EVIDENCE FROM AN ACID STREAM
- J. M. Schmid-Araya, A. Hildrew, A. Robertson, P. Schmid, J. Winterbottom
- Environmental Science
- 1 May 2002
The food web derived from Broadstone Stream clearly demonstrates that the meiofauna increases web complexity and thus, taking into account their functional diversity, may be crucial to the understanding of food web properties and ecosystems processes in streams.
The distribution of body size in a stream community: one system, many patterns
- Tracey Stead, J. M. Schmid-Araya, P. Schmid, A. Hildrew
- Environmental Science
- 1 May 2005
Spatial and temporal heterogeneity in size spectra, and the lack of clear density–body size allometry, could be due to biotic or physicochemical fluctuations and environmental change that cause rapid species turnover and changes in density and distribution, particularly among the meiofauna.
Relation between population density and body size in stream communities.
- P. Schmid, M. Tokeshi, J. M. Schmid-Araya
- Environmental ScienceScience
- 1 September 2000
It is shown that an inverse proportionality between density and body size is a consistent feature in these communities and variation in the regression slope among different taxonomic groups indicates that these communities are not governed universally by a single ecological or energetic rule.
Existing in plenty: abundance, biomass and diversity of ciliates and meiofauna in small streams
- J. Reiss, J. M. Schmid-Araya
- Environmental Science
- 1 April 2008
Information on these highly abundant but often overlooked faunal groups is essential for estimates of overall abundance, biomass, species richness and productivity in the benthos, and as such has important implications for several areas of aquatic research, e.g. for those dealing with trophic dynamics.
Rotifera Volume 1 Biology, Ecology and Systematics (2nd edn)
- J. M. Schmid-Araya
- Biology
- 1 August 2007
Secondary production of a stream metazoan community: Does the meiofauna make a difference?
- Tracey Stead, J. M. Schmid-Araya, A. Hildrew
- Environmental Science
- 1 January 2005
This study points to the potentially substantial underestimation of production arising from the problems of assessing the meiofauna, including the former use of coarse-meshed sampling devices, the requirement for live sorting of many soft-bodied taxa, and other difficulties of counting and identifying less well known groups.
Life history allometries and production of small fauna.
- J. Reiss, J. M. Schmid-Araya
- Environmental ScienceEcology
- 1 February 2010
It is concluded that a large fraction of benthic production is overlooked when protozoans and microscopic metazoans are excluded from estimates of biomass turnover, and a single allometric scaling relationship between the intrinsic rate of population increase and body mass is derived.
Temporal and spatial distribution of benthic microfauna in sediments of a gravel streambed
- J. M. Schmid-Araya
- Environmental Science
- 1 December 1994
Densities of microfauna (large heterotrophic flagellates and three ciliate size classes) inhabiting surface sediments and the hyporheic zone of a gravel-bed brook were investigated and preliminary estimates of resilience suggested that flageLLates were more resilient than ciliates.
Rotifers in interstitial sediments
- J. M. Schmid-Araya
- Environmental ScienceHydrobiologia
- 2004
The ecological role of rotifers within the interstitial environment (e.g. hyporheos, psammon, bed sediments) in lakes and running waters is reviewed and population densities, assemblage structure, patterns of colonization and drift are examined.
...
...